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"Track and field"

Thomas A Haugen, Paul A Solberg, Carl Foster, Ricardo Morán-Navarro, Felix Breitschädel, Will G Hopkins
The aim of this study was to quantify peak age and improvements over the preceding years to peak age in elite athletic contestants according to athlete performance level, sex and discipline. Individual season bests for world-ranked top 100 athletes from 2002 to 2016 (14937 athletes and 57049 individual results) were downloaded from the International Association of Athletics Federations' web site. Individual performance trends were generated by fitting a quadratic curve separately to each athlete's performance and age data using a linear modeling procedure...
March 15, 2018: International Journal of Sports Physiology and Performance
Arne Güllich
Elite track and field athletes with greater and lesser multi-year performance improvement were compared regarding their developmental sport-specific and non-specific, organised (coach-led) and non-organised (peer-led) sporting activities. Athlete pairs were matched on gender, discipline and baseline performance in competitions (at 13/19 years). Their unequal subsequent performance development during junior (13-17 years; n = 138) and senior (19-23+ years; n = 80) age ranges defined "strong responders" and "weak responders"...
March 9, 2018: Journal of Sports Sciences
Philip E Kearney, Philip R Hayes, Alan Nevill
The relative age effect (RAE) is a common phenomenon in youth sport, whereby children born early in the selection year are more likely to experience success and to sustain participation. There is a lack of research investigating variables which influence RAEs within track and field athletics. Such information is vital to guide policies in relation to competition structure, youth development squads and coach education. A database of competition results was analysed to determine the extent to which RAEs were present in track and field athletics in the United Kingdom...
March 7, 2018: Journal of Sports Sciences
Nikolaos Malliaropoulos, Georgios Bikos, Maria Meke, Korakakis Vasileios, Xavier Valle, Heinz Lohrer, Nicola Maffulli, Nat Padhiar
Background: Inversion injury to the ankle and hamstring injuries are common problems in most sports. It is not known whether these injuries constitute a predisposing factor or a precursor of injury or re-injury of these anatomical locations. Therefore, we wished to test the hypothesis that a previous inversion ankle injury exerted a significant effect on the chance of an athlete suffering from a subsequent ipsilateral hamstring injury and vice versa. Methods: In an observational cohort study over 17 years (1998-2015), 367 elite track and field athletes, were grouped according to their first traumatic isolated ankle or hamstring injury...
2018: Journal of Foot and Ankle Research
Ali Guermazi, Daichi Hayashi, Mohamed Jarraya, Michel D Crema, Roald Bahr, Frank W Roemer, João Grangeiro, Richard G Budgett, Torbjorn Soligard, Romulo Domingues, Abdalla Skaf, Lars Engebretsen
Purpose To describe the occurrence of imaging-depicted sports-related stress injuries, fractures, and muscle and tendon disorders during the 2016 Summer Olympic Games in Rio de Janeiro, Brazil. Materials and Methods Data on radiologic examinations were collected and retrospectively analyzed centrally by two board-certified musculoskeletal radiologists (with a third musculoskeletal radiologist acting as an adjudicator in case of discrepancies). Descriptive data on all imaging examinations by using radiography, ultrasonography (US), and magnetic resonance (MR) imaging were collected and analyzed according to imaging modality, country of origin of the athletes, type of sport, and type and location of injury...
February 26, 2018: Radiology
Peter H Sönksen, Richard I G Holt, Walailuck Böhning, Nishan Guha, David A Cowan, Christiaan Bartlett, Dankmar Böhning
Background: Endocrine profiles have been measured on blood samples obtained immediately post-competition from 693 elite athletes from 15 Olympic Sports competing at National or International level; four were subsequently excluded leaving 689 for the current analysis. Methods: Body composition was measured by bioimpedance in a sub-set of 234 (146 men and 88 women) and from these data a regression model was constructed that enabled 'estimated' lean body mass and fat mass to be calculated on all athletes...
2018: Clinical Diabetes and Endocrinology
Philip von Rosen, Annette Heijne, Anna Frohm, Cecilia Friden, Anders Kottorp
CONTEXT:   Our understanding of the injury burden in elite adolescent athletes in most sports is limited or unknown because of the lack of prospective, long-term injury studies. OBJECTIVE:   To describe injury patterns in terms of type, location, prevalence and incidence, recurrence, and severity grade; time to first injury; and prevalence of illness in elite adolescent athletes and to compare differences in injury data by sex and sport type. DESIGN:   Cohort study...
February 7, 2018: Journal of Athletic Training
William T Tsushima, Hyeong Jun Ahn, Andrea M Siu, Kara Yoshinaga, So Yung Choi, Nathan M Murata
The aim of this study was to examine the neuropsychological test results of non-concussed high school athletes playing at three different levels of contact sports. Based on the concussion risk data of 12 different sports, a High Contact group (n=2819; wrestling/martial arts, cheerleading, track and field, football), a Moderate Contact group (n=2323; softball, basketball, soccer), and a Low Contact group (n=1580; baseball, volleyball, water polo, tennis, cross-country) were formed and compared in terms of their scores on the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT)...
February 2, 2018: Applied Neuropsychology. Child
Ryan N Moran, John M Hauth, Robert Rabena
PURPOSE: To examine the acute effects of pre-competition massage on acceleration and sprint performance in collegiate track and field athletes. METHODS: Seventeen collegiate male (n = 9) and female (N = 8) track and field athletes participated in the study. Athletes were assigned to a counterbalanced, repeated measures designed experiment testing four treatment conditions of a pre-competition massage, dynamic warm-up, combination of a massage and warm-up, and a placebo ultrasound...
February 2018: Complementary Therapies in Clinical Practice
Jamie L Brusa
Successful recruiting for collegiate track & field athletes has become a more competitive and essential component of coaching. This study aims to determine the relationship between race performances of distance runners at the United States high school and National Collegiate Athletic Association (NCAA) levels. Conditional inference classification tree models were built and analysed to predict the probability that runners would qualify for the NCAA Division I National Cross Country Meet and/or the East or West NCAA Division I Outdoor Track & Field Preliminary Round based on their high school race times in the 800 m, 1600 m, and 3200 m...
December 30, 2017: Journal of Sports Sciences
Timothy L Miller, Marissa Jamieson, Sonsecharae Everson, Courtney Siegel
BACKGROUND: Few studies have documented expected time to return to athletic participation after stress fractures in elite athletes. HYPOTHESIS: Time to return to athletic participation after stress fractures would vary by site and severity of stress fracture. STUDY DESIGN: Retrospective cohort study. LEVEL OF EVIDENCE: Level 3. METHODS: All stress fractures diagnosed in a single Division I collegiate men's and women's track and field/cross-country team were recorded over a 3-year period...
December 1, 2017: Sports Health
Leandro Girardi Shimba, Gabriel Carmona Latorre, Alberto de Castro Pochini, Diego Costa Astur, Carlos Vicente Andreoli
Muscle injury is the most common injury during sport practice. It represents 31% of all lesions in soccer, 16% in track and field, 10.4% in rugby, 17.7% in basketball, and between 22% and 46% in American football. The cicatrization with the formation of fibrotic tissue can compromise the muscle function, resulting in a challenging problem for orthopedics. Although conservative treatment presents adequate functional results in the majority of the athletes who have muscle injury, the consequences of treatment failure can be dramatic, possibly compromising the return to sport practice...
November 2017: Revista Brasileira de Ortopedia
Michel D Crema, Mohamed Jarraya, Lars Engebretsen, Frank W Roemer, Daichi Hayashi, Romulo Domingues, Abdalla Y Skaf, Ali Guermazi
BACKGROUND: Acute muscle injuries in elite athletes are responsible for a large portion of time loss injuries. AIM: To describe the frequency, the anatomic distribution, and severity of imaging-detected acute muscle injuries among athletes who competed in the Rio de Janeiro 2016 Summer Olympics. METHODS: We recorded all sports injuries reported by the National Olympic Committee medical teams and the Organising Committee medical staff during the 2016 Summer Olympics...
December 7, 2017: British Journal of Sports Medicine
Rhianna Bridgett, Petra Klose, Rob Duffield, Suni Mydock, Romy Lauche
OBJECTIVE: Despite the recent re-emergence of the process of cupping by athletes, supporting evidence for its efficacy and safety remains scarce. This systematic review aims to summarize the evidence of clinical trials on cupping for athletes. METHODS: SCOPUS, Cochrane Library, PubMed, AMED, and CNKI databases were searched from their inception to December 10, 2016. Randomized controlled trials on cupping therapy with no restriction regarding the technique, or cointerventions, were included, if they measured the effects of cupping compared with any other intervention on health and performance outcomes in professionals, semi-professionals, and leisure athletes...
November 29, 2017: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
Justin X Nicoll, Disa L Hatfield, Kathleen J Melanson, Christopher S Nasin
PURPOSE: Overtraining syndrome (OTS) is reported in endurance sports. Thyroid hormones (TH) regulate metabolism, mood, and energy production, and may play a role in OTS of endurance athletes. The purpose of this study was to investigate relationships in TH and symptoms of OTS in track and field endurance runners (ER). METHODS: Sixteen female track and field middle distance (MD; n = 9; age: 20.2 ± 1.5 years; ht: 167.86 ± 5.04 cm; body-mass: 57.97 ± 5...
November 20, 2017: European Journal of Applied Physiology
Adele Meron, Deborah Saint-Phard
Throwing events in track and field are among the oldest sporting events in recorded history and include shot put, discus, hammer, and javelin. All throwing athletes use the kinetic chain to transfer energy from the lower extremities, through the pelvis, trunk, shoulder, arm, wrist, hand, and finally into the implement to generate maximum force. Throughout this sequential activation, mobilization, and stabilization of body segments, there is opportunity for breakdown in the chain, which can lead to injury. This review describes the biomechanics and kinetic chain components of each event and highlights injuries common among all throwers as well as injuries unique to each event...
November 2017: Current Sports Medicine Reports
Sigal Ben-Zaken, Yoav Meckel, Dan Nemet, Alon Eliakim
Previous studies have shown that the IGF1 polymorphism is associated with greater muscle mass and improved power athletic ability, but very little is known about the IGF2 polymorphism and athletic performance. PURPOSE: The aim of the present study was to assess the frequency distribution of the IGF2 rs680 polymorphism among Israeli athletes. METHODS: 185 short- (n=72) and long-distance (n=113) runners, 94 short- (n=44) and long-distance (n=50) swimmers, 54 weight lifters and 111 controls participated in the study...
December 2017: Growth Hormone & IGF Research
Daichi Hayashi, Mohamed Jarraya, Lars Engebretsen, Michel D Crema, Frank W Roemer, Abdalla Skaf, Ali Guermazi
BACKGROUND: Bone stress injuries are common in high-level athletics. AIM: To describe the demographics, frequency and anatomical location of stress injuries (ie, stress reaction and stress fractures) in athletes at the Rio de Janeiro 2016 Summer Olympic Games. METHODS: We recorded all sports injuries at the Rio de Janeiro 2016 Summer Olympics reported by the National Olympic Committee (NOC) medical teams and in the polyclinic and medical venues...
October 26, 2017: British Journal of Sports Medicine
Mohamed Jarraya, Michel D Crema, Lars Engebretsen, Oleg M Teytelboym, Daichi Hayashi, Frank W Roemer, Abdalla Y Skaf, Ali Guermazi
BACKGROUND: Tendon abnormalities are prevalent among both elite and non-elite athletes. Cross-sectional imaging modalities are used to confirm and evaluate the severity of such lesions. AIM: To describe the demographics, prevalence, anatomical location and characteristics of tendon abnormalities in athletes who participated in the Rio de Janeiro 2016 Summer Olympic Games. METHODS: We recorded all sports injuries reported by the National Olympic Committee (NOC) medical teams and the Organizing Committee medical staff during the Rio 2016 Summer Olympics...
October 19, 2017: British Journal of Sports Medicine
Jonathan Ospina Betancurt, Maria S Zakynthinaki, Maria Jose Martinez-Pariño, Carlos Cordente Martinez, Carmen Rodríguez Fernández
The purpose of this study was to assess the veracity of the Court of Arbitration for Sport's assertion that sex-differences in athletic performance in elite-standard track and field competition is of the order of 10-12%. Exponential curves were fitted to the data of selected track and field events of the finals of all IAAF World Championships and Olympic Games from 1983 to 2016. For each curve, the coefficient of determination R(2) was calculated, in combination the corresponding 95% confidence intervals for the curve constants...
September 1, 2017: Journal of Sports Sciences
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